Which ladder is carried with the tip forward?
a. roof
b. extension
c. straight
d. attic
Answer: a. roof
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Problem 1.48 For the support of Prob. 1.47, knowing that the diameter of the pin is d = 16 mm and that the magnitude of the load is P = 20 kN, determine (a) the factor of safety for the pin, (b) the required values of b and c if the factor of safety for the wooden member is the same as that found in part a for the pin. Problem 1.47 A load P is supported as shown by a steel pin that has been inserted in a short wooden member hanging from the ceiling. The ultimate strength of the wood used is 60 MPa in tension and 7.5 MPa in shear, while the ultimate strength of the steel is 145 MPa in shear. Knowing that b = 40 mm, c = 55 mm, and d = 12 mm, determine the load P if an overall factor of safety of 3.2 is desired.
When lifting an object using eyebolts, always use a _____ in each eyebolt.
a. choker sling b. shackle c. hook d. wire rope
____ roofs can provide window shading to reduce solar gain in hot climates.
A. Deck B. Porch C. Patio D. Deck and patio
If the February demand for a product is 5,000 units and the seasonal index for February is 0.75, what is the deseasonalized February demand?
A) 15,000 B) 3,750 C) 6,667 D) 10,000 E) 8,750